hi there serdar yagulp here for infoworld in this  episode of smart go we're going to take a closer  
hi there serdar yagulp here for infoworld in this  episode of smart go we're going to take a closer  

look at the way go handles date and time values  by way of the time module the time module and go  
look at the way go handles date and time values  by way of the time module the time module and go  

gives us access to objects and methods that let us  get the current time create time and date values  
gives us access to objects and methods that let us  get the current time create time and date values  

from scratch and perform formatting on existing  time values it also gives us tools for working  
from scratch and perform formatting on existing  time values it also gives us tools for working  

with time zones easily one of the least favorite  aspects of dealing with date and time values if  
with time zones easily one of the least favorite  aspects of dealing with date and time values if  

you're a programmer but the time module helps  handle those things in a straightforward way  
you're a programmer but the time module helps  handle those things in a straightforward way  

let's start with a simple example getting the  current time and printing it to the console here  
let's start with a simple example getting the  current time and printing it to the console here  

first we import the time module and then we use  the time.now method to get the current time and  
first we import the time module and then we use  the time.now method to get the current time and  

date from the system and store it in the variable  t now if we print this to the console like this  
date from the system and store it in the variable  t now if we print this to the console like this  

we're going to get a very complex and detailed  output this includes the date the time the time  
we're going to get a very complex and detailed  output this includes the date the time the time  

zone and some additional information about the  current processes monotonic clock that's something  
zone and some additional information about the  current processes monotonic clock that's something  

that's used to measure elapsed time between events  inside a process instead of the absolute time of  
that's used to measure elapsed time between events  inside a process instead of the absolute time of  

the system at large that's something worth going  into detail about in its own video though so for  
the system at large that's something worth going  into detail about in its own video though so for  

now we'll leave it alone now if we just want  to print a few details about the current date  
now we'll leave it alone now if we just want  to print a few details about the current date  

and time instead of the whole thing we could use  the format method of the time object to do this  
and time instead of the whole thing we could use  the format method of the time object to do this  

with format we pass along a special formatting  code which looks a little bit like a date and time  
with format we pass along a special formatting  code which looks a little bit like a date and time  

but is actually a way to indicate how to  format specific components of the date and time  
but is actually a way to indicate how to  format specific components of the date and time  

for instance in in the format string we have this  code 2006 that's actually an indication we want  
for instance in in the format string we have this  code 2006 that's actually an indication we want  

to insert a four digit year so when we run this  code we will see only a few parts of the date and  
to insert a four digit year so when we run this  code we will see only a few parts of the date and  

time the ones that we most need now let's say i  want to create a time and date value from scratch  
time the ones that we most need now let's say i  want to create a time and date value from scratch  

not just by sampling the system time and to  do this we can use the date method to create  
not just by sampling the system time and to  do this we can use the date method to create  

a time.time object by supplying it with  the needed details about our time and date  
a time.time object by supplying it with  the needed details about our time and date  

here in this example i've got a struct named  movie which has two fields one is the name of  
here in this example i've got a struct named  movie which has two fields one is the name of  

a movie a string and the other is its release  date expressed as a time.time object now when  
a movie a string and the other is its release  date expressed as a time.time object now when  

i create an instance of this struct and i want  to populate the release field i make a call to  
i create an instance of this struct and i want  to populate the release field i make a call to  

time.date and i pass along in this order the  year the month the day and then the hour minute  
time.date and i pass along in this order the  year the month the day and then the hour minute  

second and millisecond of the time in question  and then finally a time zone reference for now  
second and millisecond of the time in question  and then finally a time zone reference for now  

i'm going to use utc as the time zone but we'll  go into detail later about how we can alter that  
i'm going to use utc as the time zone but we'll  go into detail later about how we can alter that  

now you notice for this structure that i  am using a format function and in there it  
now you notice for this structure that i  am using a format function and in there it  

converts the time object to a simple date when  we print out the whole movie struct as a string  
converts the time object to a simple date when  we print out the whole movie struct as a string  

if we run this you can see that's what happens we  don't need to know the the actual time the movie  
if we run this you can see that's what happens we  don't need to know the the actual time the movie  

was released just the day and date now if we want  to provide adjustments for time zones we can use  
was released just the day and date now if we want  to provide adjustments for time zones we can use  

the time dot load location method to create a  time adjustment object for specific time zone  
the time dot load location method to create a  time adjustment object for specific time zone  

and then we pass that to the dot in method on a  time object to adjust it here in this reworked  
and then we pass that to the dot in method on a  time object to adjust it here in this reworked  

version of the earlier example i showed you i'm  getting the current time which is pre-adjusted  
version of the earlier example i showed you i'm  getting the current time which is pre-adjusted  

by the way for utc minus five by way of my system  clock that's because i'm on the east coast of the  
by the way for utc minus five by way of my system  clock that's because i'm on the east coast of the  

united states and if i want to render this as just  utc i get a utc adjustment object i'll call it tz  
united states and if i want to render this as just  utc i get a utc adjustment object i'll call it tz  

and i pass that to n and i can do the same thing  if i want to get the time from the west coast  
and i pass that to n and i can do the same thing  if i want to get the time from the west coast  

so when i run this program i will get three  time outputs one is for my original time zone  
so when i run this program i will get three  time outputs one is for my original time zone  

one is for utc and one is  for my friends in california  
one is for utc and one is  for my friends in california  

so to sum up time objects and go let you sample  the current time or create a new time object from  
so to sum up time objects and go let you sample  the current time or create a new time object from  

scratch that lets you render time to strings using  the format method and they let you apply time zone  
scratch that lets you render time to strings using  the format method and they let you apply time zone  

adjustments to existing times and in future videos  i'm going to show you how you could perform more  
adjustments to existing times and in future videos  i'm going to show you how you could perform more  

sophisticated operations with times and dates  for instance performing math on times and dates  
sophisticated operations with times and dates  for instance performing math on times and dates  

or using time intervals in your programs  to do something on a regular basis or to  
or using time intervals in your programs  to do something on a regular basis or to  

determine how long specific operations take within  a program that's it for this video if you liked it  
determine how long specific operations take within  a program that's it for this video if you liked it  

please leave a comment below and don't forget to  subscribe to the tech talk channel on youtube and  
please leave a comment below and don't forget to  subscribe to the tech talk channel on youtube and  

for more smart go and more dev with serdar be sure  to follow me on facebook youtube and infowold.com
for more smart go and more dev with serdar be sure  to follow me on facebook youtube and infowold.com

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